DE1446933C - Process for the production of solid propellants from cast pole - Google Patents

Description

3 4

cellulose granulate used. It is also possible to stir it in. The composition of such porous nitrocellulose granulate in any quantity - mass is:

Ratios with non-porous nitrocellulose granules,, _,.,. _. ,.

to mix. This gives you the option of using the compact granulate .... 26.0 percent by weight

Burning rates and ballistic intrinsic 5 porous granules 22.5 percent by weight

Shafts of cast pole masses constructed in this way in white plasticizer 8.0 percent by weight

tem range and the required nitroglycerin 43.5 percent by weight

To adapt conditions. One such possibility This mixture is poured into casting molds, for example

is described in the following example. Treated on a vibrating table for 10 minutes and

ίο Cured for 3 days at 50 ° C. Example 2 The ballistic additives and stabilizers

were incorporated in the production of granules.

In an approach made from non-porous nitrocellu- The mass has a heat of explosion of

loose granules, plasticizers and nitroglycerin are 940 kcal / kg. The burning speed in the crawl is after 20 hours of gelatinization at 15 ford bomb is 75mm / sec. at 70atü and Normal temperature porous nitrocellulose granulate 20 ° C.

Claims (2)

1 2 sen granules can speak. The porosity can be patent claims: in a known manner, for. B. by incorporating. ·., .. water-soluble salts and later dissolving them out 1. Use of a nitrocellulose of the same, as well as the fineness and amount of these achieve with a nitrogen content of about 12.9 to 5 salts. The Porosi-13.2 obtained in this way ° / o through the incorporation of water-soluble salts must, however, be obtained during the subsequent gelatinization and leaching out of the same obtained nitrogens remain. .. · -... ■ _ cellulose granulate, optionally with the addition The solution to the problem posed is invented of a non-porous nitrocellulose granulate, possible according to the use of a Production of solid propellants from cast poles. io from a nitrocellulose with a nitrogen content 2. The method according to claim 1, characterized by about 12.9 to 13.2% by incorporation of water, that inorga-soluble salts and leaching out of the same are obtained in the casting mixture Oxidizers, inorganic fuels, nenen nitrocellulose granules, if necessary below and / or pieces of metal wire in per se known addition of a non-porous nitrocellulose granulate. ter way be incorporated. 15 A nitrocellulose with a nitrogen content of about 12.9 to 13.2%, which, however, also varies depending on the manufacturing process or can be exceeded, does not gelatinize fully under the conditions used for casting pole-20 constantly through, so that the required porosity is maintained. It is z. B. proceeded as follows. The invention relates to a method for using a nitrocellulose with 13.1% nitrogen Manufacture of solid propellants from cast poles. Stabilizers and the desired additives "Gießpol" solid propellants are mixed from pourable and in a kneader with the addition of 110% Mixtures of nitrocellulose granules, disintegrating table salt with the help of an ether-alcohol mixture oils, plasticizers, stabilizers and ballistic gelatinized. The mass obtained is through a Additives, so-called, cast POL, are pressed and placed on a die with a diameter of 1.8 mm stood. cut a length of 1.8 mm. The granulate Such cast POL masses are - how is to remove the solvent about e.g. from German Patent 1086163 watered for 30 40 hours at 40 to 65 ° C and then knows - manufactured in such a way that granules are air-dried. made of nitrocellulose of suitable dimensions with depending on the desired end properties of the Blasting oils, e.g. B. nitroglycerin, and liquid soft propellant are according to another feature Makern stirred into a pourable mass, in which the invention in the casting mixture inorganic desired propellant forms and through an- 35 oxidizers, inorganic fuels and / or subsequent heat treatment gelatinization of the metal wire pieces in a manner known per se and homogenization of the casting compound processed. works. A product, for example, is used as a granulate. In general, it is possible to use the used, which is obtained in explosive oils and the appropriate propellant charges by means of methods known per se Plasticizers gelatinizable nitro- 40 or additives in the desired manner to modified cellulose mixtures, Stabilizers and given. if ballistic additives with the addition of gelati-. The following embodiments show the ning, volatile solvents in per se production of propellants using a known way by extrusion, cutting of the porous granulate, the strands as described above and stripping off the solvents. 45 is set. For certain purposes, such as starting B e i s d i e 1 1 charges, post-acceleration sets and short-term burners, are solid fuels with the highest possible fuel - 45.5% of the porous granules are 41.0% speed, for example in the order of magnitude of nitroglycerin and 13.5% triacetin, for example in one of 50 mm / sec. at 70 atmospheres / 20 ° C and more, the 5 ° mixer commonly used in the manufacture of explosives, wisely used types treated for about 15 minutes with cast composite sets on the base and then filled into the fuel mold and about shaken by e.g. ammonium perchlorate and organic bin 10 minutes. After about 3 days of storage That can be the burning rate through grain in a heating cabinet at 50 to 55 ° C is the the size of the salt used and hardened in 55 propellant. The burning rate special cases, e.g. B. with forehead burners, by a mass produced in this way was when pressing pouring metal wires in the burning direction increase. 10 atm in the Crawford bomb with about 80 mm / The object of the invention is to measure sec. Burning solid propellants on the basis of the The burning rate of the invention senem POL, the burning speed of which can be varied in a wide range by means of a range of 60 propellants. This can be graded the porosity of the nitrocellulose used, if instead of the usual granulate powder and by changing the nitrogen content a porous nitrocellulose granulate is used. It can burn speeds 1028 922 and 1095179 propellant powder grains with 65 of about 20 to 80 mm / sec. at 70 atm 2O ⁰ C ereinem porous core known. These grains are to be targeted. However, from an impermeable or hardened. Example 1 was used to produce the fast Envelope, so that a porous-burning propellant does not only contain porous nitro-